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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Trojan Horse

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Trojan Horse
Technical name:Trojan Horse
Threat level:Low
Alias:TrojanHorse,
Type:Trojan
Effects:  Its main purpose is to take control of the affected computer and allow other users to control it.
Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:Nov. 27, 2002
Detection updated on:Sept. 16, 2007
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Trojan Horse is not a specific Trojan, but it refers to a group of viruses with the following characteristics:

  • It spreads quickly using means of propagation normally used by viruses.
  • It affects the entire system, as it tries to take control of infected computers.
  • Infection takes place when the file that contains the Trojan is run.
  • This file, whose name is variable in each case, carries out infection in different ways and, on some occasions, it is included within other viruses or worms.

The effects of Trojan Horse are dangerous as computers under attack might be controlled from another computer (attacking system) through a program.

This type of program normally takes advantage of unprotected communications ports in affected computers.

Visible Symptoms 

    

Trojan Horse does not refer to any virus in particular. Therefore, there are not any specific symptoms that reveal its presence on the system.